Djokovic starts run at calendar-year Grand Slam

The second day of the U.S. Open is underway and the No. 1 seeds in both brackets are set to compete.

Novak Djokovic opens his bid to become the first man since 1969 to win a calendar-year Grand Slam when he plays 18-year-old qualifier Holger Vitus Nodskov Rune of Denmark in the first match of the night session in Arthur Ashe Stadium. Djokovic would break a tie with Roger Federer and Rafael Nadal for most major titles among men if he wins the tournament. They all have 20.

Djokovic is 15-0 in the first round at the U.S. Open and has won eight of the last 12 Grand Slam tournaments.

Women’s No. 1 seed Ash Barty faces Vera Zvonareva, the 2010 U.S. Open runner-up, on Ashe in an afternoon match.

Andy Murray was still hot a day after he lost to Stefanos Tsitsipas in the opening round. Murray said after the match that he “lost respect” for Tsitsipas for pushing the boundaries when it comes to taking breaks during a match. Murray tweeted on Tuesday that it takes Tsitsipas “twice as long to go the bathroom as it takes Jeff Bazos to fly into space.”